How do unicellular organisms living in water control the entry/exit of water from their cells? Are they able to live in any environment? How could this be tested?
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Unicellular organisms living in water control the entry/exit of water from their cells through osmosis (the diffusion of water).
Unicellular organisms are they able to live in any environment they have adaptations that make them very well suited in any environment and they can reproduce very quickly in large-numbers.
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By the process of osmosis.
Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides
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